
18 Years of Experience
Accepting patients
Who is Dr. Allen, Cardiologist in Saint Helena, CA?
Dr. Stewart Allen, MD is a Cardiologist, who primarily practices in Saint Helena, CA with 1 additional practice location. He has been practicing for over 18 years. Dr. Allen is fluent in English and Spanish, and is currently seeing new patients. Dr. Allen’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Allen’s office at (707) 963-4997.
What are Areas of Expertise for Dr. Allen?
Dr. Stewart Allen, MD is a highly-rated, board-certified Cardiologist known for expertly diagnosing, treating, and managing a wide array of related conditions and procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Allen empowers patients to confidently navigate their health journey, specializing in Cardiac Catheterization, Pacemakers/Defibrillators, Peripheral Arterial Disease (PAD), Transcatheter Aortic Valve Replacement (TAVR), and comprehensive wellness support. Serving the Saint Helena, CA community, Dr. Allen is dedicated to enhancing lives through expert, patient-centered care.
What languages does Dr. Allen speak?
Dr. Allen and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does a Cardiologist like Dr. Allen typically treat?
As a Cardiologist, Dr. Allen diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Allen. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly. Learn more about our claims-based healthcare methodology.
Also known as:
- High Blood Pressure
- Hypertension
- Primary Hypertension
- Essential Hypertension
ICD-10 Codes:
- I10: Essential (primary) hypertension
Also known as:
- High Cholesterol
- Cholesterol
- Triglycerides
- Hyperlipidemia
- High lipids
- Dyslipidemia
ICD-10 Codes:
- E785: Hyperlipidemia, unspecified
Also known as:
- Hardening of the Arteries in the Heart without Chest Pain
- Atherosclerosis
- Coronary Artery Disease
- Silent Coronary Artery Disease
- Asymptomatic Atherosclerosis
ICD-10 Codes:
- I2510: Atherosclerotic heart disease of native coronary artery without angina pectoris
Also known as:
- Atrial Fibrillation
- Afib
- A-fib
- Irregular heart rhythm
ICD-10 Codes:
- I4891: Unspecified atrial fibrillation
Also known as:
- Chest Pain
- Chest discomfort
- Thoracic pain
- Upper body pain
ICD-10 Codes:
- R079: Chest pain, unspecified
Does Dr. Allen accept my insurance?
Dr. Allen accepts most major insurance plans. Important: Please call our office at (707) 963-4997 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Allen accept in Saint Helena, CA?
Dr. Allen in Saint Helena, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
BCBS Unspecified
Federal government of the United States
Humana
Medicare
Molina Healthcare
Other Provider Networks
Preferred IPA
UnitedHealth Group
Western Growers Association
View All Insurances
Where is Dr. Allen's office located?

Cardiology: Adventist Health St. Helena
999 Adams Street, Suite 106
Saint Helena, CA 94574
(707) 963-4997
Specialty Care: Adventist Health
18990 Coyote Valley Road, Suite 8
Hidden Valley Lake, CA 95467
(707) 987-9024
What is Dr. Allen's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Allen's National Provider Identifier (NPI) number is 1205034030.
What common questions do patients ask about Dr. Allen?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Allen
What is Dr. Stewart Allen's specialty?
Dr. Allen is a Cardiologist near Saint Helena, CA.
What does a Cardiologist do?
An internist specializing in cardiovascular diseases focuses on the diagnosis and management of complex heart and blood vessel conditions, including heart attacks and life-threatening arrhythmias.
Is this Dr. Stewart Allen affiliated with a ranked Castle Connolly Top Hospital?
No, Allen is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: Adventist Health St. Helena. Castle Connolly Top Hospitals are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals
When to see a Cardiologist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Cardiologist. Explore insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.
Is Stewart Allen accepting new patients in Saint Helena, CA?
Yes, Dr. Stewart Allen is accepting new patients at this time.
Does Dr. Stewart Allen offer online booking?
Please contact Dr. Allen's office at (707) 963-4997 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Stewart Allen?
Please contact Dr. Allen's office at (707) 963-4997 for information regarding telehealth appointment availability or for scheduling assistance.
Other Cardiologist Near Saint Helena, CA

Dr. Monica Divakaruni, MD is a Cardiologist, who primarily practices in St. Helena, CA with 1 additional practice location. She is board certified.

Cardiology: Adventist Health St. Helena
999 Adams Street, Suite 106
St. Helena, CA 94574
BM
Cardiologist
Dr. Brian Mundy, MD is a Cardiologist, who primarily practices in Napa, CA with 1 additional practice location. He has been practicing for over 21 years.
Napa, CA

Dr. Peter Chang Sing, MD is a Clinical Cardiac Electrophysiologist, who primarily practices in Santa Rosa, CA with 1 additional practice location. He has been practicing for over 34 years.
Connect with DR. Allen
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Cardiology: Adventist Health St. Helena
999 Adams Street, Suite 106
Saint Helena, CA 94574
